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Study Setting

The Children's Hospital of Eastern Ontario (CHEO) is a tertiary-care pediatric teaching hospital affiliated with the University of Ottawa. It serves patients up to 18 years of age from the municipality of Ottawa-Carleton, as well as surrounding communities in Eastern Ontario and Western Quebec (total pediatric population over 500,000).

An entrance to the CHEO's emergency department

The Emergency Department (ED) has 66,000 patient visits per year and is staffed 24/7 by specialty-trained Emergency Physicians (EPs). Additional personnel include part-time physicians as well as medical students, residents from various programs and Pediatric Emergency Medicine fellows at various levels of training.